Notification步骤：
1、onCreate方法中mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
2、在点击事件事件监听中：
Notification notification=new Notification(R.drawable.earlybird, "小鸟飞 啊飞", System.currentTimeMillis());
Intent intent=new Intent(MainActivity.this,SecondActivity.class);
PendingIntent contentIntent=PendingIntent.getActivity(MainActivity.this, 0, intent, 0);
notification.setLatestEventInfo(MainActivity.this, "愤怒的小鸡", "愤怒的小鸟与愤怒的小鸡", contentIntent);
notification.flags=Notification.FLAG_AUTO_CANCEL;//点击后自动消失
mNotificationManager.notify(1, notification);
Toast步骤：
1、Toast.makeText(MainActivity.this, "我是愤怒的小鸡", Toast.LENGTH_SHORT).show();
//切记记得.show()方法，让Toast显示出来
//Toast不会获取焦点，提示消息过了一段时间会自动消失,不需要用户去点击确认，也不需要用户去反馈
//在应用的其他界面依然能够看到Toast提示
Dialog步骤：
第一种方法：
1、创建创建AlertDialog.Builder对象
AlertDialog.Builder builder=new AlertDialog.Builder(MainActivity.this);
2 、设置对话框标题，内容，图标
builder.setTitle("退出");
builder.setIcon(R.drawable.earlybird);
builder.setMessage("是否真的退出？");
3、设置对话框的按钮
builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(MainActivity.this, "删除成功", Toast.LENGTH_LONG).show();
}
});
builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(MainActivity.this, "取消删除", Toast.LENGTH_LONG).show();
}
});
4、通过AlertDialog.Builde对象创建AlertDialog对象
AlertDialog dialog = builder.create();
dialog.show();
第二种方法：
1、在点击监听事件中showDialog(1);
2、重写OnCreateDialog方法
protected Dialog onCreateDialog(int id) {
switch (id) {
case 1:
dialog=dialog_1();
break;
default:
break;
}
return dialog;
}
3、重写dialog_1()方法：
private AlertDialog dialog_1() {
AlertDialog.Builder builder = new AlertDialog.Builder(
MainActivity.this);
builder.setTitle("退出");
builder.setIcon(R.drawable.earlybird);
builder.setMessage("是否真的退出？");
builder.setPositiveButton("确定",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog,
int which) {
Toast.makeText(MainActivity.this, "删除成功",
Toast.LENGTH_LONG).show();
}
});
builder.setNegativeButton("取消",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog,
int which) {
Toast.makeText(MainActivity.this, "取消删除",
Toast.LENGTH_LONG).show();
}
});
return builder.create();
}
optionMenu步骤：
第一种方法：
1、在onCreateOptionsMenu方法中
public boolean onCreateOptionsMenu(Menu menu) {
menu.add(0, 1, 0, "设置");
menu.add(0, 2, 0, "帮助");
menu.add(0, 3, 0, "添加");
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
2、重写onOptionsItemSelected方法
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case 1:
Toast.makeText(this, "成功进入设置", Toast.LENGTH_LONG).show();
break;
case 2:
Toast.makeText(this, "成功进入帮助", Toast.LENGTH_LONG).show();
break;
case 3:
Toast.makeText(this, "成功进入添加", Toast.LENGTH_LONG).show();
break;
default:
break;
}
return super.onOptionsItemSelected(item);
}
第二种方法：
1、在menu文件夹中创建xml文件
2、重写重写onOptionsItemSelected方法
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.item1:
Toast.makeText(this, "呵呵", Toast.LENGTH_LONG).show();
break;
case R.id.item2:
Toast.makeText(this, "哈哈", Toast.LENGTH_LONG).show();
default:
break;
}
return super.onOptionsItemSelected(item);
}
ContextMenu步骤：
1、在onCreate方法中
tv = (TextView) findViewById(R.id.textView1);
registerForContextMenu(tv);
2、重写onCreateContextMenu方法
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenuInfo menuInfo) {
menu.add(0,1,0,"复制");
menu.add(0, 2, 0, "编辑");
super.onCreateContextMenu(menu, v, menuInfo);
}
3、重写onContextItemSelected方法
public boolean onContextItemSelected(MenuItem item) {
switch (item.getItemId()) {
case 1:
Toast.makeText(this, "复制成功", Toast.LENGTH_LONG).show();
break;
case 2:
Toast.makeText(this, "粘贴成功", Toast.LENGTH_LONG).show();
default:
break;
}
return super.onContextItemSelected(item);
}
