可以使用Recevier启动透明Activity来实现
Recevier 实现
网络上很多
具体Receiver的实现
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| package com.example.myapplication;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
public class MyReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals("android.intent.action.BOOT_COMPLETED")) {
Intent i = new Intent(context, DialogActivity.class);
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(i);
}
}
}
|
透明 Activity 实现
styles.xml 中加入, 透明 sytle
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| <style name="Theme.AppCompat.Translucent">
<item name="windowActionBar">false</item>
<item name="windowNoTitle">true</item>
<item name="android:windowNoTitle">true</item>
<item name="android:windowBackground">@android:color/transparent</item>
<item name="android:colorBackgroundCacheHint">@null</item>
<item name="android:windowIsTranslucent">true</item>
<item name="android:windowAnimationStyle">@android:style/Animation</item>
</style>
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然后在AndroidManifest.xml中你想要启动的那个activity的Theme设置为Theme.AppCompat.Translucent
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| <activity android:name=".DialogActivity"
android:theme="@style/Theme.AppCompat.Translucent">
</activity>
|
对话框实现
这个网上也很多
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| package com.example.myapplication;
import android.content.DialogInterface;
import android.support.v7.app.AlertDialog;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
public class DialogActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_dialog);
AlertDialog dialog = new AlertDialog
.Builder(this)
.setTitle("title")
.setMessage('content')
.setPositiveButton("确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
finish();
}
})
.create();
dialog.show();
}
}
|
