了解隐示Intent跳转方法

以下主要介绍了关于隐示Intent的使用方法：

       1、在Activity布局中添加了8个Button控件，分别为拨打电话、发送短信、打开网页、播放音乐、播放视频、播放图片、安装apk和通知栏等内容，代码见下面：

       2、在布局中添加了一个ImageView控件调用RoundImageView使得图片为圆形，

       3、对ImageView控件进行监听，使用PopWindow在点击图片后弹出一个PopWindow

       4、对弹出的PopWindow设置：重建一个layout，在layout中添加三个Button控件，分别为拍照、从手机相册中选择、取消，再对三个控件进行监听，从而实现了拍照功能，获取图片和剪裁图片的功能

 

 

 

 

package com.example.administrator.jreduch06;import android.Manifest;import android.app.Activity;import android.app.Notification;import android.app.NotificationManager;import android.app.PendingIntent;import android.content.Intent;import android.content.pm.PackageManager;import android.database.Cursor;import android.graphics.Bitmap;import android.graphics.drawable.ColorDrawable;import android.net.Uri;import android.os.Bundle;import android.provider.MediaStore;import android.support.v4.app.ActivityCompat;import android.support.v4.app.NotificationCompat;import android.support.v7.app.AppCompatActivity;import android.view.Gravity;import android.view.View;import android.view.WindowManager;import android.widget.Button;import android.widget.LinearLayout;import android.widget.PopupWindow;import java.io.File;public class IntentActivity extends AppCompatActivity        implements View.OnClickListener {    private RoundImageView riv;    private View popView;    private PopupWindow pw;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_intent);        //从主控局中取得控件        Button bt1 = (Button) findViewById(R.id.bt1);        Button bt2 = (Button) findViewById(R.id.bt2);        Button bt3 = (Button) findViewById(R.id.bt3);        Button bt4 = (Button) findViewById(R.id.bt4);        Button bt5 = (Button) findViewById(R.id.bt5);        Button bt6 = (Button) findViewById(R.id.bt6);        Button bt7 = (Button) findViewById(R.id.bt7);        Button bt8 = (Button) findViewById(R.id.bt8);        riv = (RoundImageView)findViewById(R.id.riv);        //加载popWindow的布局        popView=this.getLayoutInflater().inflate(R.layout.popwindow,null);        //从popWindow中取得控件        Button cancle= (Button) popView.findViewById(R.id.cancle);        Button camera= (Button) popView.findViewById(R.id.camera);        Button photo= (Button) popView.findViewById(R.id.photo);        //注册本类监听        bt1.setOnClickListener(this);        bt2.setOnClickListener(this);        bt3.setOnClickListener(this);        bt4.setOnClickListener(this);        bt5.setOnClickListener(this);        bt6.setOnClickListener(this);        bt7.setOnClickListener(this);        bt8.setOnClickListener(this);        riv.setOnClickListener(this);        cancle.setOnClickListener(this);        camera.setOnClickListener(this);        photo.setOnClickListener(this);/*        //明确指定要跳转的组件，叫做显示Intent//        Intent intent=new Intent(IntentActivity.this,SecondActivity.class);//        startActivity(intent);        //隐示Intent，由安卓系统帮助匹配        //匹配规则，清单文件中的Intent-filter标签中的Action//        Uri uri=Uri.parse("tel:[phone]");//        Intent intent=new Intent(Intent.ACTION_DIAL,uri);//        startActivity(intent);*/    }    public void onClick(View view) {        int id = view.getId();        switch (id) {            //拨打电话            case R.id.bt1:                Uri uri = Uri.parse("tel:[phone]");                Intent intent = new Intent(Intent.ACTION_CALL, uri);                if (ActivityCompat.checkSelfPermission(this, Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) {                    // TODO: Consider calling                    //    ActivityCompat#requestPermissions                    // here to request the missing permissions, and then overriding                    //   public void onRequestPermissionsResult(int requestCode, String[] permissions,                    //                                          int[] grantResults)                    // to handle the case where the user grants the permission. See the documentation                    // for ActivityCompat#requestPermissions for more details.                    return;                }                startActivity(intent);                break;            //发送短信            case R.id.bt2:                Intent it1 = new Intent(Intent.ACTION_VIEW);                it1.putExtra("sms_body", "代开发票");                it1.setType("vnd.android-dir/mms-sms");                startActivity(it1);                break;            //打开网页            case  R.id.bt3:                Uri uri2=Uri.parse("http://www.baidu.com");                Intent it2=new Intent(Intent.ACTION_VIEW,uri2);                startActivity(it2);                break;            //播放音乐            case  R.id.bt4:                Intent it3=new Intent(Intent.ACTION_VIEW);                File file=new File("/sdcard/???+-+?????.mp3");                it3.setDataAndType(Uri.fromFile(file),"audio/*");                startActivity(it3);                break;            //播放视频            case  R.id.bt5:                Intent it4=new Intent(Intent.ACTION_VIEW);                File file1=new File("/sdcard/20140417_221118.mp4");                it4.setDataAndType(Uri.fromFile(file1),"video/*");                startActivity(it4);                break;            //播放图片            case  R.id.bt6:                Intent it5=new Intent(Intent.ACTION_VIEW);                File file2=new File("/sdcard/f2.png");                it5.setDataAndType(Uri.fromFile(file2),"image/*");                startActivity(it5);                break;            //安装apk            case R.id.bt7:                Intent it6=new Intent(Intent.ACTION_VIEW);                it6.setDataAndType(Uri.parse("file:///sdcard/Beytagh.apk"),//file路径                        "application/vnd.android.package-archive");                startActivity(it6);                break;            //通知栏消息            case R.id.bt8:                notification();                break;            //填充PopWindow            case R.id.riv:                pw=getPopWindow(popView);                break;            //点击取消后PopWindow退出            case R.id.cancle:                pw.dismiss();                break;            //照相功能            case R.id.camera:                takePhoto();                break;            //获取图片            case R.id.photo:                phonePhoto();                break;        }    }    /*    * 调用图库*/    public void phonePhoto(){        Intent intent=new Intent(Intent.ACTION_PICK,                MediaStore.Images.Media.EXTERNAL_CONTENT_URI);        startActivityForResult(intent, 2);    }    /*    * 调用相机*/    private String capturePath="";//文件的路径    public void takePhoto(){        Intent camera=new Intent(MediaStore.ACTION_IMAGE_CAPTURE);        File parent=FileUitlity.getInstance(getApplicationContext())                .makeDir("head_img");        capturePath=parent.getPath()                +File.separatorChar//斜杠                +System.currentTimeMillis()                +".jpj";        camera.putExtra(MediaStore.EXTRA_OUTPUT,                Uri.fromFile(new File(capturePath)));        camera.putExtra(MediaStore.EXTRA_VIDEO_QUALITY,1);        startActivityForResult(camera, 1);    }    /*    * 调用系统的裁剪功能    * */    public void startPicZoom(Uri uri){        Intent intent=new Intent("com.android.camera.action.CROP");        intent.setDataAndType(uri,"image/*");        intent.putExtra("crop", "true");//允许裁剪        //设置裁剪比例        intent.putExtra("aspectX",1);        intent.putExtra("aspectY",1);        //设置图片的高度宽度        intent.putExtra("outputX",150);        intent.putExtra("outputY", 150);        intent.putExtra("return-data",true);        startActivityForResult(intent,3);    }    @Override    protected void onActivityResult(int requestCode, int resultCode, Intent data) {        super.onActivityResult(requestCode, resultCode, data);        if(resultCode!=Activity.RESULT_OK){//返回-1            return;        }        //相机返回结果，调用系统裁剪        if(requestCode==1){            startPicZoom(Uri.fromFile(new File(capturePath)));        }        //相册返回的结果，调用系统裁剪        else if(requestCode==2){            Cursor cursor=getContentResolver()                    .query(data.getData(),                            new String[]{MediaStore.Images.Media.DATA},                            null,null,null);            cursor.moveToFirst();            String capturePath=                    cursor.getString(                            cursor.getColumnIndex(                                MediaStore.Images.Media.DATA));            cursor.close();            startPicZoom(Uri.fromFile(new File(capturePath)));        }else if(requestCode==3){         Bundle bundle= data.getExtras();            if(bundle!=null){                 Bitmap bitmap=bundle.getParcelable("data");                riv.setImageBitmap(bitmap);            }            pw.dismiss();        }    }    //消息栏通知    public void notification(){        //先定义一个Intent        Intent  intent=new Intent(this,SecondActivity.class);        //使用PendingIntent 封装 Intent        /*//常量FLAG_UPDATE_CURRENT 生成一个新的对象        *   FLAG_NO_CREATE如果不存在，创建一个新的对象        *  FLAG_NO_SHOT 创建的对象只使用一次         *  FLAG_UPDATE_CURRENT 已存在则直接使用*/        PendingIntent pi=PendingIntent.getActivities(                this,0,new Intent[]{intent},PendingIntent.FLAG_UPDATE_CURRENT);        //获取通知服务        NotificationManager nm=                (NotificationManager) getSystemService(Activity.NOTIFICATION_SERVICE);        //构建一个通知        Notification notification=new NotificationCompat.Builder(this)                .setSmallIcon(R.mipmap.ic_launcher)                .setTicker("A")                .setContentInfo("我是通知栏")                .setContentTitle("奥运会")                .setContentText("PendingIntent的使用方法")                .setAutoCancel(true)                .setDefaults(Notification.DEFAULT_ALL)                .setContentIntent(pi)                .build();        //通过通知服务 显示通知        nm.notify(0,notification);    }/** 构建一个popWindow*/    public PopupWindow getPopWindow(View view) {        PopupWindow popupWindow=new PopupWindow(view,                LinearLayout.LayoutParams.MATCH_PARENT,//宽匹配屏幕，高匹配内容                LinearLayout.LayoutParams.WRAP_CONTENT,                true);        //获取光标        popupWindow.setFocusable(true);        popupWindow.setOutsideTouchable(true);//点击外面是否消失        popupWindow.setAnimationStyle(R.style.pop);//设置动画效果，在style中设置动画效果        backgroundAlpha(0.3f);//设置背景透明度        popupWindow.setBackgroundDrawable(new ColorDrawable());//背景色        popupWindow.showAtLocation(riv, Gravity.BOTTOM, 0, 0);//显示位置        //当popWindow消失时背景色的b        popupWindow.setOnDismissListener(new PopupWindow.OnDismissListener() {            @Override            public void onDismiss() {                backgroundAlpha(1.0f);                riv.setVisibility(View.VISIBLE);            }        });        return popupWindow;    }    //设置背景透明度    public void backgroundAlpha(float bgAlpha){        WindowManager.LayoutParams ll=getWindow().getAttributes();        ll.alpha=bgAlpha;        getWindow().setAttributes(ll);    }}