1.SplashActivity
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (Build.VERSION.SDK_INT >= 23) {//6.0才用动态权限
initPermission();
}
}
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//申请两个权限，录音和文件读写
//1、首先声明一个数组permissions，将需要的权限都放在里面
String[] permissions = new String[]{Manifest.permission.RECORD_AUDIO,
Manifest.permission.READ_EXTERNAL_STORAGE};
//2、创建一个mPermissionList，逐个判断哪些权限未授予，未授予的权限存储到mPerrrmissionList中
List<String> mPermissionList = new ArrayList<>();
private final int mRequestCode = 100;//权限请求码
//权限判断和申请
private void initPermission() {
mPermissionList.clear();//清空没有通过的权限
//逐个判断你要的权限是否已经通过
for (int i = 0; i < permissions.length; i++) {
if (ContextCompat.checkSelfPermission(this, permissions[i]) != PackageManager.PERMISSION_GRANTED) {
mPermissionList.add(permissions[i]);//添加还未授予的权限
}
}
//申请权限
if (mPermissionList.size() > 0) {//有权限没有通过，需要申请
ActivityCompat.requestPermissions(this, permissions, mRequestCode);
}else{
//说明权限都已经通过
}
}
//请求权限后回调的方法
//参数： requestCode 是我们自己定义的权限请求码
//参数： permissions 是我们请求的权限名称数组
//参数： grantResults 是我们在弹出页面后是否允许权限的标识数组，数组的长度对应的是权限名称数组的长度，数组的数据0表示允许权限，-1表示我们点击了禁止权限
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions,
@NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
boolean hasPermissionDismiss = false;//有权限没有通过
if (mRequestCode == requestCode) {
for (int i = 0; i < grantResults.length; i++) {
if (grantResults[i] == -1) {
hasPermissionDismiss = true;
}
}
//如果有权限没有被允许
if (hasPermissionDismiss) {
showPermissionDialog();//跳转到系统设置权限页面，或者直接关闭页面，不让他继续访问
}else{
//全部权限通过，进行下一步操作
}
}
}
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private void showPermissionDialog(){
AlertDialog.Builder builder = new AlertDialog.Builder(SplashActivity.this);
builder.setTitle("权限设置");
builder.setMessage("是否开启权限？");
builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
goIntentSetting();
finish();
}
});
builder.setNeutralButton("取消", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
finish();
}
});
builder.show();
}
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private void goIntentSetting() {
Intent intent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
Uri uri = Uri.fromParts("package", SplashActivity.this.getPackageName(), null);
intent.setData(uri);
try {
SplashActivity.this.startActivity(intent);
} catch (Exception e) {
e.printStackTrace();
}
}