Android如何自定义Toast？and 四种AleterDialog的用法

来源：互联网发布：淘宝宝贝优化教程编辑：程序博客网时间：2024/05/21 06:33

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Toast

自定义Toast

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public class MainActivity extends AppCompatActivity implements View.OnClickListener {    private Button mButton1;    private Button mButton2;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        mButton1 = (Button) findViewById(R.id.button1);        mButton1.setOnClickListener(this);        mButton2 = (Button) findViewById(R.id.button2);        mButton2.setOnClickListener(this);    }    @Override    public void onClick(View v) {        switch (v.getId()) {            case R.id.button1:                Toast toast = Toast.makeText(getApplicationContext(), "你真傻，", Toast.LENGTH_LONG);                 //添加富文本                Spanned spanned = Html.fromHtml("我<img src=''/>是<font color='#50f0'>toast</font>,你真傻", new Html.ImageGetter() {                    @Override                    public Drawable getDrawable(String source) {                        Drawable drawable = getResources().getDrawable(R.mipmap.tangyan);                        drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight());                        return drawable;                    }                }, null);                //更改文本                toast.setText(spanned);                //设置显示位置                //zh                toast.setDuration(Toast.LENGTH_LONG);                toast.setGravity(Gravity.CENTER_HORIZONTAL, 0, 0);                toast.show();                break;            case R.id.button2:                Toast toast2 = new Toast(getApplicationContext());                LayoutInflater inflater = getLayoutInflater();                View toastView = inflater.inflate(R.layout.my_toast_layout, null);                TextView textViewTitle = (TextView) toastView.findViewById(R.id.title);                TextView textViewMessage = (TextView) toastView.findViewById(R.id.textview_message);                textViewTitle.setText("标题");                textViewMessage.setText("内容");                toast2.setView(toastView);                toast2.setDuration(Toast.LENGTH_LONG);                toast2.show();                break;            default:                break;        }    }}

Dialog

简单的Dialog

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带选择项的Dialog

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单选项Dialog

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多项选择Dialog

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public class MainActivity extends AppCompatActivity implements View.OnClickListener {    private Button button1;    private Button button2;    private String[] mData = new String[]{"选项1", "选项2", "选项3", "选项4"};    private Button button3;    private String msex[] = new String[]{"男", "女", "其他"};    private String sex;    private Button button4;    private String[] mSport = new String[]{"篮球", "足球", "游泳", "跑步", "健身"};    private boolean isCheckedHobby[] = new boolean[mSport.length];    private StringBuffer hobby;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        //setCountView必须放前面，否则空指针        setContentView(R.layout.activity_main);        //总是写成   button1. findViewById(R.id.button1);        button1 = (Button) findViewById(R.id.button1);        button1.setOnClickListener(this);        button2 = (Button) findViewById(R.id.button2);        button2.setOnClickListener(this);        button3 = (Button) findViewById(R.id.button3);        button3.setOnClickListener(this);        button4 = (Button) findViewById(R.id.button4);        button4.setOnClickListener(this);    }    @Override    public void onClick(View v) {        switch (v.getId()) {            case R.id.button1:                //传getApplicationContext()会出错                AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);                builder.setIcon(R.mipmap.ic_launcher).setTitle("标题").setMessage("内容").setNegativeButton("Negative", new DialogInterface.OnClickListener() {                    @Override                    public void onClick(DialogInterface dialog, int which) {                        Toast.makeText(getApplicationContext(), "点击了Negative按钮", Toast.LENGTH_LONG).show();                    }                }).setNeutralButton("Neutral", new DialogInterface.OnClickListener() {                    @Override                    public void onClick(DialogInterface dialog, int which) {                        Toast.makeText(getApplicationContext(), "点击了NeutralButton按钮", Toast.LENGTH_LONG).show();                    }                }).setPositiveButton("Positive", new DialogInterface.OnClickListener() {                    @Override                    public void onClick(DialogInterface dialog, int which) {                        Toast.makeText(getApplicationContext(), "点击了PositiveButton按钮", Toast.LENGTH_LONG).show();                    }                }).create().show();                break;            case R.id.button2:                AlertDialog.Builder builder1 = new AlertDialog.Builder(MainActivity.this);                builder1.setTitle("选择的Dialog");                builder1.setItems(mData, new DialogInterface.OnClickListener() {                    @Override                    public void onClick(DialogInterface dialog, int which) {                        Toast.makeText(getApplicationContext(), "选中" + (which + 1) + "", Toast.LENGTH_LONG).show();                    }                });                AlertDialog dialog = builder1.create();                dialog.show();                break;            case R.id.button3:                AlertDialog.Builder builder2 = new AlertDialog.Builder(MainActivity.this);                builder2.setTitle("请选择性别");                //0位默认第一个选项                builder2.setSingleChoiceItems(msex, 0, new DialogInterface.OnClickListener() {                    @Override                    public void onClick(DialogInterface dialog, int which) {                        Toast.makeText(getApplicationContext(), "您选择性别为" + msex[which] + "", Toast.LENGTH_SHORT).show();                        //sex就是用来传值的                        sex = msex[which];                    }                });                builder2.setPositiveButton("确定", new DialogInterface.OnClickListener() {                    @Override                    public void onClick(DialogInterface dialog, int which) {                        button3.setText("您选择性别为" + sex);                    }                    //create().show();也可以不加如果此处添加了，下面AlertDialog dialog1=builder2.create();                    //  dialog1.show();也存在的话，，界面上会执行两遍                });                builder2.setNeutralButton("取消", new DialogInterface.OnClickListener() {                    @Override                    public void onClick(DialogInterface dialog, int which) {                    }                });                AlertDialog dialog1 = builder2.create();                dialog1.show();                break;            case R.id.button4:                AlertDialog.Builder builder3 = new AlertDialog.Builder(MainActivity.this);                builder3.setTitle("请选择爱好");                builder3.setMultiChoiceItems(mSport, isCheckedHobby, new DialogInterface.OnMultiChoiceClickListener() {                    @Override                    public void onClick(DialogInterface dialog, int which, boolean isChecked) {                        isCheckedHobby[which] = isChecked;                    }                });                builder3.setPositiveButton("确定", new DialogInterface.OnClickListener() {                    @Override                    public void onClick(DialogInterface dialog, int which) {                        hobby = new StringBuffer();                        for (int i = 0; i < isCheckedHobby.length; i++) {                            if (isCheckedHobby[i]) {                                hobby.append(mSport[i]);                            }                        }                        button4.setText("您选择愛好为" + hobby);                    }                    //create().show();也可以不加如果此处添加了，下面AlertDialog dialog1=builder2.create();                    //  dialog1.show();也存在的话，，界面上会执行两遍                });                builder3.setNeutralButton("取消", new DialogInterface.OnClickListener() {                    @Override                    public void onClick(DialogInterface dialog, int which) {                    }                });                AlertDialog dialog3 = builder3.create();                dialog3.show();                break;            default:                break;        }    }}

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