Android学习笔记进阶十二之裁截图片

 

 

package xiaosi.cut;import java.io.File;import android.app.Activity;import android.content.Intent;import android.graphics.drawable.Drawable;import android.net.Uri;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.view.ViewGroup.LayoutParams;import android.widget.Button;public class CutActivity extends Activity {    private static int SELECT_PICTURE;//返回标志位 filed    private File tempFile;    private Button button;    /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        //setContentView(R.layout.main);        this.tempFile = new File("/sdcard/song/a.jpg");        button = new Button(this);        button.setText("获取图片");        button.setOnClickListener(new OnClickListener() {            public void onClick(View v) {                Intent intent = new Intent(Intent.ACTION_GET_CONTENT);                intent.setType("image/*");                intent.putExtra("crop", "true");// crop=true 有这句才能出来最后的裁剪页面.                intent.putExtra("aspectX", 1);// 这两项为裁剪框的比例.                intent.putExtra("aspectY", 2);// x:y=1:2                intent.putExtra("output", Uri.fromFile(tempFile));                intent.putExtra("outputFormat", "JPEG");//返回格式                startActivityForResult(Intent.createChooser(intent, "选择图片"), SELECT_PICTURE);            }        });        setContentView(button);    }    /**     * 裁剪完图片后系统调用的方法:onActivityResult     */    @Override    protected void onActivityResult(int requestCode, int resultCode, Intent data) {        if (resultCode == RESULT_OK)            if (requestCode == SELECT_PICTURE)                button.setBackgroundDrawable(Drawable.createFromPath(tempFile.getAbsolutePath()));    }}